Sierra Wireless AirLink 595W, Руководство пользователя

Страница: 29 / 88

Hardware and Software Installation
Rev 1.5 Jul.08 23
You can also use a ground screw on the connector panel of the
MP modem. Use a 16 ‐ gauge wire if you choose to use a ground
screw. A ground screw is not required as long as the power
harness is properly grounded.
Figure 3-4: The ground screw connector on the connector panel.
Note: Tighten cables connected
to the MP modem by hand. Do
not use tools.
Step 2 — Mount the antennas and install
the cables
The MP 595 modem has two Main RF antenna connectors and
one GPS antenna connector. The MP 595W has an additional
RF antenna connector for an AP antenna. The MP modem
requires an RF antenna to connect to the wireless network. The
second RF connector is optional and allows for receive
diversity.
The built ‐ in GPS module requires a dedicated GPS antenna or
a combination antenna with cables to both the Main RF and
GPS antenna connectors on the MP modem.
If you already have an MP modem combination GPS antenna,
you can re ‐ use it with your new MP modem. This antenna has
two leads — one for Main RF (TNC connector) and one for GPS
(SMA connector).
Main RF antenna
Use an approved Main RF antenna to connect to the wireless
network. The antenna must have 50 ohms impedance and a
cable with a TNC connector (or SMA connector if the antenna
is being used for receive diversity), as well as the following
characteristics:
• The total maximum gain, including cable loss, must not
exceed 4.15 dBi (if the antenna operates on the PCS band)
or 5.1 dBi (if the antenna operates only on the Cellular
band).
• The antenna must transmit and receive on the necessary
frequency bands in your coverage area. The MP modem
supports these RF bands:
If you are using a ground screw,
Power
I/O
insert it here.